Fix bug in iossim's CaseInsensitivePrefixSearch.

testing/iossim/iossim.mm

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import <Foundation/Foundation.h>
 #include <asl.h>
 #include <libgen.h>
 #include <stdarg.h>
 #include <stdio.h>
 
@@ skipping 488 matching lines @@
   return YES;
 }
 
 // Performs a case-insensitive search to see if |stringToSearch| begins with
 // |prefixToFind|. Returns true if a match is found.
 BOOL CaseInsensitivePrefixSearch(NSString* stringToSearch,
                                  NSString* prefixToFind) {
   NSStringCompareOptions options = (NSAnchoredSearch | NSCaseInsensitiveSearch);
   NSRange range = [stringToSearch rangeOfString:prefixToFind
                                         options:options];
-  return range.location != 0;
+  return range.location != NSNotFound;
 }
 
 // Prints the usage information to stderr.
 void PrintUsage() {
   fprintf(stderr, "Usage: iossim [-d device] [-s sdkVersion] [-u homeDir] "
       "[-e envKey=value]* [-t startupTimeout] <appPath> [<appArgs>]\n"
       "  where <appPath> is the path to the .app directory and appArgs are any"
       " arguments to send the simulated app.\n"
       "\n"
       "Options:\n"
@@ skipping 187 matching lines @@
              [error localizedDescription],
              [error domain], static_cast<long int>([error code]));
   }
 
   // Note that this code is only executed if the simulator fails to start
   // because once the main run loop is started, only the delegate calling
   // exit() will end the program.
   [pool drain];
   return EXIT_FAILURE;
 }